Easy access to 3 operating modes

Unlike the previous version of the Sonoff 4CHR2 switch, we have access to self-locking modes (allows you to turn on devices that remain on until you manually turn them off), locking (when you turn on another device, the other, previously turned on, automatically turns off) and inching (when turned on, the device turns off after a predetermined time) directly through the application on your phone.

Separate handling of 4 devices

Self-locking mode allows for instant on/off of 4 connected light sources.

Reliable assistant

Users can remotely control connected devices via the free eWeLink app, available on iOS and Android platforms. Voice support and collaboration with smart assistants is also possible through compatibility with Amazon Alexa, Amazon Echo, Echo Dot, Amazon Tap, Google Assistant, Google Home, Google Nest, IFTTT.

Protection above all

The durable housing is made of high-quality fire-resistant PC material, which provides excellent protection while using connected devices.

Universal compatibility

The relay is compatible with many devices available on the market. It can be used with lighting, household appliances, fans and many others.

Warranty: 12 months

The text is machine translated.

Same summary

The SONOFF 4CHR3 smart switch is designed for anyone who wants to easily digitize and upgrade the control of multiple devices in their home or apartment - without the need for a complete renovation of the electrical wiring. It uses a Wi-Fi connection, which allows for quick integration into the existing smart ecosystem, especially for users who want remote control or automation of routines. It is suitable for those who appreciate the convenience of physical buttons, but want the additional option of control via an application, and for most users, the biggest limitation may be the need for basic technological knowledge when setting up the system for the first time.

Recommendation source: Enaa guides and team experiences.

User view

Typical users of this smart switch are families, individuals or residents who want to upgrade their classic switches and enable easy control of various devices – such as lighting, blinds or electrical outlets – directly via a smartphone or physical buttons. In practice, the solution is particularly convenient in larger spaces where conventional manual control becomes impractical, or where users want to set schedules and scenarios that automatically adapt the home to their habits.

Users often choose Sonoff products because their range is known for its long-term compatibility with various smart devices and ease of use in various smart homes.

Why buy at Enaa

At Enaa, we always carefully select products that enable reliable integration into your smart home, and at the same time, you can also find support and usage tips in our offer if you are just getting to know the solutions or want to build a more connected home environment.

Answers to frequently asked questions

Can I use the SONOFF 4CHR3 smart switch for multiple different devices at the same time?

Yes, the switch allows you to control up to four different devices or circuits at the same time, which is useful, for example, for separate lights, sockets or motors within one room.

Is it possible to control via phone and physical buttons at the same time?

The switch supports combined control - you can set it to work with an app on your smartphone, or directly via physical buttons on the unit itself, which is practical for everyday use without a phone.

How do I ensure proper integration with my existing Wi-Fi network?

Before installation, it is recommended to check that the room has adequate Wi-Fi coverage and that the switch is located within the range of your network, as this allows for a stable connection and responsive device management.

Does the product work without an additional center or “hub”?

SONOFF 4CHR3 uses a Wi-Fi connection and does not require an additional hub to operate, which simplifies installation and use in smaller smart home systems.

What types of devices are recommended to be connected to a smart switch?

Most often, users connect lighting, roller shutters, blinds or other electrical devices with basic on-off functions; it is important to check compatibility regarding voltage and load before installation.

Description updated: April 2026